Rotary intaglio printing press



C. Sl CRAFTS ROTARY INTAGLIO PRINTING PRESS March s, 1938.

Filed Jan. 6, 1936 5 Sheets-$11661'. l

mm m] 5% LWR ATTORNEYS March 8, 1938. C, s, CRAFTS 2,110,289

` ROTARY INTAGLIO PRINTING PRESS Filed Jan.. e, 1986 8 sheets-sneu 2 Z3 76| 4o 334, 39H28" i @Jggy- Wm y BY 4m/MW ATTORNEYS March 8, 1938. c, s, CRAFTS v 2,110,289

ROTARY INTAGLIO PRINTING PRESS J /M//f/ @4Z/WM ATTORNEYS Patented Mar. s, 193s 2,110,289

UNITED STATES PATENT OFFICE ROTARY INTAGLIO PRINTING PRESS Curtis S. Crafts, Oak Park, Ill., assignor to The Goss Printing Press Company, Chicago, Ill., a corporation of Illinois Application January t, 1936, serial No. 57,683

19 claims. (c1. iol- 151) 'I'he invention relates to new and useful imparts, for easy and economical manufacture and. provements in inking mechanisms for rotary inassembling, and for quick and easyoperation taglio presses and more particularly to such imand manipulation of parts. Other objects of the provements in the means for mounting and op invention will appear in connection with the del erating the doctor blade. tail description of the present preferred embodi- 5 Objects and advantages of the invention will ment of my invention. be set forth in part hereinafter and in part will Referring now in detail to the embodiment of be obvious herefrom, or may be learned by practhe invention illustrated by way of example in tice with the invention, the same being realized thefaccompanying drawings, an intaglio printand attained by means of the instrumentalities ing couple comprising a design cylinder I and an .10v

and combinations pointed out in the appended 4impression cylinder 2 which are suitablyjourclaims. p naled in the press frame 3. A supporting struc- 'Ihe invention consists in the novel parts, conture for the doctor blade carrying, regulating and structions, arrangements, combinations and imactuating mechanism is provided, and as shown,

provements herein shown and described. it is adapted for use withxthe closed fountain 15 The accompanying drawings, referred to heretype of'intagliov press, and with other types of in and constituting a part hereof, illustrate one intaglio presses as well. 'Ihe structure as shown embodiment of the invention, and ltogether with is mounted on the frame 3 of the press and also the description, serve to explain the principles on the top of the ink fountain structure 4. As

of the invention. I shown, it has arrinn'er continuous, generally ver- 20 Of the drawings:- l tically disposed curved Wall 9, extending across Fig. 1 is a'fragmentary top plan, looking from between the side frames, and adapted to consti-l line I-I of Fig. 3, of a mechanism embodying tute a' part of the closure of a sealed ink founthe invention; tain, although so far as concerns many features Fig. 2 is a fragmentary elevation of the midof the invention this Wall, or large portions of it, 25 dle part of Fig. 1; may be omitted. Fig. 3 is a vertical section on line 3--3 of Fig. Integral with or fixed to the ends of the wall 1; and member 9, and abutting against the side frame Fig. 4 is a vertical section on line 4-4 of members of the press, are end plates I0 of this 3o Fig- 1 supporting structure for the doctor blade mecha- 30 Obje'cts of the invention are to provide a novel nism, and the entire structure is made vertically mechanism which is simple, of relatively fewadjustable or positionable on the press frame. parts, sturdy, reliable and efficient in operation; With this end in view there are vertical, Voutto provide such a mechanism which causes the wardly-extending ribs Il formed on the vertical doctor blade to exert a finely regulable resilient edges of the end plates I0, these ribs projecting 35 pressure onthe design cylinder, and which will within bracket plates I2, which are bolted on to move the blade into and. out of operative relathe side frames 3 -of the press. Bolts I3 project tion -with the cylinder without disturbing the through elongated slots I4 formedin the bracket previously adjusted resilient action of the blade plates I2, the bolts being screw-threaded into the 40 with the cylinder. Also to provide a doctor blade frame 9, and serve to clamp the supporting fraxe 40 carrier having parts reciprocable together to re- 9, l0 in any desired Vertical POSitOn Within 't 'e ciprocate the blade along the face of the cylinrange -of the, slots. Similar supporting me `s der, said parts being relatively angularly movare provided at the bottom 'end of the structure, able under resilient pressure exerted between where bolts IFI-project through elongated slots I6 them to cause resilient pressure of the reciproformed in the upper part of the fountain wall 4, 45 cating doctor blade on the design cylinder; and and are screw-threaded into the bottom part of to further provide that said parts are also anguthe end plates I0, in like manner to the bolts I3 larly relatively movable to move the doctor blade already described. 'I'his affords a vertical adinto and out of operative relation with the design iustment of they entire doctor blade mechanism cylinder, this on and off movement being effected and its supporting frame on the frame of the 5o without disturbing a previously effected regulapress and relatively to the design cylinder. tion of the blade pressure on the cylinder. Also Referring now to the mechanism for support' to provide preferred mechanisms vfor carrying ing and reciprocating the doctor blade, a rod 23' out the above-stated objects together with prois mounted in internal recesses in blocks or pedesvisions for accurate and reliable positioning of tals 24, located at either side of the press, and 55 which are bolted on to a top plate 25 of the supporting structure 9, I9 already described. f The rod 23 is both rotatable and longitudinally reciprocable in its supports 24.` The doctor blade supporting structure is mounted on and supported by the rod 23, and is fixed thereto so as to reciprocate therewith and have common angular motion with the rod. This reciprocable `doctor blade support comprises `a plurality of spacedapart collarsl 28 which encircle the rod 23 and are fixed thereto by pins 29, so that they move together. Integral with and projecting forwardly from the respective collars 28 are members 38 which at their other ends are also integral with 'a seat or rail 3| which extends continuously across the Width of the press and throughout the length of the doctor blade and the design cylinder (Fig. 1). On its upper side this rail 3| is recessed longitudinally to constitute a seat for the doctor blade carrier proper. This doctor blade carrier comprises two fiat metal plates 32 and 33, 'longer than the design cylinder, between which the resilient doctor blade 34 is firmly held, the plates being fastened together tightly with the previously tensioned doctor bladefirmly held between them, and projecting a considerable distance beyond their side edges on the side toward the design cylinder of the press. As shown, the lower plate 32 projects outwardly beyond the plate 33, as is best seen in Fig. 3. The embodied means for holding the doctor blade and its carrier, the supporting plates 32 and 33 in position on the seat of the carrier comprises a plurality of spaced-apart clamping fingers 39 which bear on the top of the plate 33. Screw-threaded pins 40 are fixed in the top of the carrier 3| and project through openings in thecorresponding clamping fingers 39, and nuts 4| hold the clamping fingers firmly in position and exerting powerful pressure upon the plate 33 yof the doctor blade carrier. I Y

Means are provided for accurately'positioning the doctor blade and its supporting plates 32 and 33 upon the carrier 3|, which effects the positioning of the doctor blade with respect to the design cylinder. In said means, (Fig. 1) a screw rod 41 is journaled in the vertical ange or rear part 48 of the carrier 3|, and is held from longitudinal movement in flange 48 by a collar 49 on the opposite side of the flange. Screw rod 41 is threaded into the rear side of plate 33. Cooperating with screw rod 41 is a bolt 50, which is screw-threaded into the flange 48, and its end abuts against the plateI 33, the bolt being supplied with a lock nut The two bolts work against each other and serve to accurately position the doctor blade and its carrier and to held them rmly in position. A suitable counterbalance for the blade carrier about rod 23 is provided, and as shown an arm 43 is fixed to rod 23 and projecting rearwardly therefrom.

Means are provided for transversely flexing the doctor blade and one of the members employed for this purpose is a plate 51, which rest upon a forwardly and downwardly beveled face formed jboth fastened to the upper outside edge 52 of the wall 8.' Preferably there is a second shorter resilient blade 53 contacting with and backing the backing blade 58, this structure forming an ink seal to prevent ink passing back into the mechanism. The blade 59 is strongly fiexed and its outer edge presses resiliently against the under side of the doctor blade 34 throughout its length, and holds it powerfully yet resiliently against the plate 51, while permitting resilient yielding action of the desired intensity.

Means are provided for exerting a finely regulable resilient pressure of the doctor blade 34v against the design cylinder, and in the embodied form thereof this means operates through the blade carrier, and as embodied, a U-shaped frame 1| is fastened at both its ends by bolts 12 to seats on the rear sides of the two central collars 28, and the frame is thus fastened to the longitudinally'reciprocable and angularly movable rod-v 23 and the blade carrier supported by the rod. There is a U-shaped or yoke-like frame 14 which has at either end internally apertured bosses or collars and 16, Vwhich collars encircle rod 23, but are not fastened thereto. These collars 15 and 18 make a tight t against the outside ends of the central collars 28, for a purpose later to be described. The frame 14 extends outwardly and rearwardly from the rod 23 just beneath the frame 1| previously described, and has longitudinal movement with the frame 1| but is held against angular movementabout rod 23. For this purpose, centrally ofthe median portion of the frame 14 is formed a collar. 19, which encircles and slides along a fixed guide rod 88, which is mounted on the upward extension 8| of the central rear part of frame 8, I8. Means are `mounted between these two frames 1| and 14 for effecting the desired resilient pressure of the doctor blade upon the design cylinder, while permitting the doctor blade to be moved toward and away from the design cylinder, and thus into and out of operative relation with the cylinder, without disturbing the adjustment of the resilient pressure. In the embodied form the frame 14 reciprocates with the rod 23 but is restrained from angular motion, while the frame 1| also reciprocates with the rod 23 and is pinned to the rod so that they move angularly together, and the regulable resilient pressure is exerted between the two frames.

Referring now in detail to the resilient pressure exerting means, a nut 83 has a pivotal mounting 84 in an opening in the central part of the cross reach of the frame 14. Screw-threaded in the nut 83 is a screw rod 85, having a nut 85 screwed onto and fastened to its outer end to function as a stop against the nut 83, to limit the movement of the frame 1| away from the frame 14 under the action of the spring means later described. Fixed medianly on screw rod 85 is a collar 88 and mounted on the screw rod just above collar 88 is a thrust ball-bearing 9|, held in place by a collar 82 fixed to the screw rod on the opposite side of the bearing. Bearing against the inner face of the thrust bearing is a spiral compression spring 93, the other end of the spring press-` ing against the end of a hollow cylindrical member 94, having at its outer end a hand-wheel 85. The cylindrical member 84 has an external screwthread, which is threaded into an internally screw-threaded hollow member 88, pivotally mounted at 91 in an opening in the central part of the cross reach of the frame 1|. Screw rod 85 is provided at its upper end with a crank handle 98. A lock nut 88 is provided at the nut Cil 83 and a lockI nut |00 is provided at the top of the member 90.

As the frame 'Mis held against angular movement by reason of its two slidable mountings on the rod 23 and the rod 80, while frame 1| is free to move angularly, the pressure from the spring 93 is exerted upon the doctor blade 34 against the design cylinder I, and by rotating the handwheel 9.5, the desired degree of spring pressure may be exerted by the doctor blade upon the cylinder. When it is desired to move the doctor blade away from the design cylinder, the handle 98 is turned, the lock nut 99 having been previously loosened. Rod 85 is thus moved longitudinally through nut 03 and frame 1| is swung downwardly, and the doctor blade carrier 3| is swung upwardly, carrying the doctor blade away from the design cylinder. When the doctor blade is to'be moved backwardl'y, handle 98 is turnedl in the oppositeriirection, screw rod 85 moves upwardly through nut 83 until ilxed nut 86 engages 83, at which time the doctor blade is pressing on the design cylinder with the same amount of resilient pressure as before and as set and determined by `means of the hand-wheel 95.

The embodied form of means for reciprocating the doctor blade along the design cylinder comprises a barrel cam |06, xed on a shaft |01, journaled in the frame. A cam roller |03 running in the groove of cam |06 is mounted on one end of a lever |09, which is pivotally mounted on a pin H0, supported on the frame structure. At its other end lever |09 is pivotally connected at ||2 to a connecting rod H3, which rodris pivotally connected at its other end by lug Ill to the yoke 1l. As previously stated, the inside faces of the collars 'i5 and 16 of yoke I4 ilt tightly against the outside faces of the middle collars 28, which are pinned tothe shaft 23. Thus the entire structure described, with the doctor blade carrier and the doctor blade, are reciprocated together in the bearings 24 of the shaft 23, causing the doctor blade to reciprocate on the face of the design cylinder.

The invention in its broader aspects is not limited to the specii'lc mechanisms shown and described but departures may be made therefrom Within the scope of the accompanying claims without departing from the principles of the invention and without sacriilcing its chief advantages.

What I claim is;

1. A rotary intaglio inking mechanism including in combination a longitudinallyl reciprocable blade carrier, a doctor blade mounted on said carrier to reciprocate on the design cylinder, means mounted on said carrier for resiliently pressing the doctor blade against the design cylinder, means for regulating the pressure of the doctor blade on the cylinder, and means for moving the doctor blade into and out of operative relation with the design cylinder without disturbing the setting of said pressure regulating means.

2. A rotary intaglio inking mechanism including in combination a longitudinally reciprocable blade carrier, a doctor blade mounted on said carrier to reciprocate on the design cylinder, means mounted on the carrier for pressing the blade on the design cylinder and for regulatingsaid pressure, said means including a spring and means for regulating the pressure of said spring on the blade.

3. A rotary intaglio inking mechanism including in combination a longitudinally reciprocable blade carrier, a doctor blade mounted on said carrier to reciprocate on' the design cyllnder,

means mounted on the carrier for pressing the blade on the design cylinder and for regulating said pressure, said means including a spring and screw operated' means for regulating the pressure of said spring on the blade.

4. A rotary intaglio inking mechanism including in combination a longitudinally reciprocable blade carrier, a doctor blade mounted on said carrier to reciprocate on the designcylinder, a

member on said carrier connected to move said doctor blade against the design cylinder, a spring "mounted on said carrier and pressing against said member and means for regulating the pressure of said spring.

5. lA rotary intaglio inking mechanism including in combination an angularly movable doctor blade, means for reciprocating the blade along the design cylinder, means'for resiliently pressing the blade against thecylinder and for regulating said pressure, i including two members reciprocating with the blade, one of said members being angularly movable with the' blade, and a device for exerting regulable resilient pressure between said two members in an angular direction.

6. A rotaryintaglio inkingv mechanism including in combination an angularly movable doctor blade, means for reciprocating the blade along the design cylinder, means for resiliently pressing the blade against the cylinder and for regulating said pressure, including two members reciprocating withv the blade, one of said members being angularly movable with the-blade, and a device for exerting regulable resilient pressure between said two members in an angular direction, and means for eiecting relative angular movement between said members to move the doctor blade into and out of operative relation with the design cylinder.

7. A rotary intaglio inking mechanism including in combination an angularly movable doctor blade, means forv reciprocating the blade along the design cylinder, .means for angularly moving the blade including a spring pressing the blade toward the cylinderand a screw acting on the spring to regulate the spring pressure.

8. A rotary intaglio inking mechanism including in combination an angularly movable doctor blade and a member mounted on opposite sides of an axis to move together, an armA restrained from angular movement with said blade and member, a screw rod connecting said arm and member, the screw rod having screw thread connection with one of said members and a spring interposed in the connections between the screw rod and the other of said members. 9. A rotary intaglio inking mechanism including in combination an angularly movable doctor blade and a member mounted on opposite sides of an axis to move together, an arm restrained from angular movement with said blade and member, a screw rod connecting said arm and member, the screw rod having screw thread connection with one` of said members and a spring interposed in the connections between the screw rod and the other of said members and a screw threaded member for regulating the pressure 'of said spring.

10. A; rotary intaglio inking mechanism including in combination an angularly movable doctor blade and a member mounted on opposite sides oi an axis to move togetherl an arm repressing on the screw rod, a screw mounted onv the other of saidmembers and adapted to vary the pressure on said spring, and means for turning the screw rod.

11. A rotary intaglio inking mechanism including in combination a reciprocable and angularly movable rod, a doctor blade carrier xed to and projecting from said rod, a doctor blade mounted on said carrier, anv arm fixed tov and extending fountain, a doctor blade carrier mounted on said frame and having reciprocatory and angular movement relative to the frame, said carrier being angularly movable to carry the doctor bla'de into and out of operativev relation tothe design cylinder, and means for .placing fvariable resilient pressure on said carrier to regulate the pressure of the-doctor blade on the design cylinder.

13. A rotary intaglio inking mechanism including` in combination a fixed frame above the ink fountain, a doctor blade carrier mounted on said frame and having reciprocatory and angular movement relatively thereto, and means for angularly moving said carrier to regulate the pressure of the doctor blade on the design cylinder, said means including a spring arid a screw for regulating the pressure yof the spring.

`14. A rotary intaglio inking mechanism4 including in combination a longitudinally reciprocable rod, a doctor blade carrier fixed to the rod, a doctor blade on the carrier, a fixed guide parallel to said rod, a yoke mounted to reciprocate on said guide and mounted on said rod to reciprocate with the rod, means for exerting resilient pressure between the yoke and the doctor blade carrier, and means for regulating the resilient pressure.

15. A rotary intaglio inking mechanism including in combination a longitudinally reciprocable rod, a doctor blade carrier xed to the rod, a doctor blade on ythe carrier, a fixed guide parallel to said rod, a yoke mounted to reciprocate on said guide and mounted on said rod to reciprocate with the rod, means for exerting resilient pressure between the yoke and the doctor blade carrier, including a screw rod between the yoke and carrier and having screw threaded-connection with one end and a spring and screw threaded connection with the other.

16. A rotary intaglio inking mechanism Vincluding in combination a longitudinally reciprocable rod, a plurality of supports therefor, means for reciprocating the rod, a doctor blade carrier fixed to the rod, a doctor blade on the design cylinder without disturbing the pressurev regulation on the blade, and means for reciproeating the rod, the yoke and blade carrier together to move the blade along the design cyl-l inder. l

17. A rotary intaglio inking mechanism including in combination a longitudinally reciprocable rod, supporting means therefor, means for reciprocating the rod on its supporting means, a

doctor blade carrier fixed to the rod, a doctor blade on the carrier, a fixed guide parallel to said rod, a pressure exerting member fixed to said rod and extending therefrom on the opposite side from the blade carrier, a yoke mounted to reciprocate on said guide and mounted on said rod to reciprocate with the rod, a spring exerting pressure between the yoke and said pressure exerting member and causing the doctor blade to press on the cylinder, screw means for regulating said pressure, and means for effecting relativeA movement of said yoke and saidpressure exerting member to lift the doctor blade from the cylinder and to restore it to position against the cylinder without disturbing the previously adjusted spring pressure regulation.

l8. A rotary intaglio inking mechanism including in combination a longitudinally reciprocable rod, a plurality of supports therefor, means for reciprocating the rod on its supports, a doctor blade carrier fixed to the rod, a doctor blade on the carrier, a fixed guide parallel to said rod, a pressure exerting member fixed to said rod and extending therefrom on the opposite side from the blade carrier, a yoke mounted to reciprocate on said guide and mounted on said rod to reciprocate with the rod, a nut mounted on the yoke, a screw rod threaded in the nut, a stop on the end of the screw rod for engaging the nut to stop the rod, a collar on the screw rod, a thrust bearing abutting the collar, a spring encircling the screw rod and a holder for the spring screw threaded onto said pressure exerting member for regulating the tension on the spring and thereby the spring pressure of the doctor blade on its cylinder.

19. In a doctor blade mechanism, a recipro- 

